EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment GG074. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Mon Nov 7 14:09:37 CET 2011 pidopryhora@jive.nl

General Comments. ( Brief data summary and scan listing )
GG074 had 16 stations (6 EVN + 10 VLBA), 4 x 4 MHz IF, 2 polarizations, and was correlated in two passes, one with 4 bands x 2 pol, 16 frequency points per IF/pol, and the other with 1 band x 2 pol, 1024 frequency points per pol, both with 2s integrations. In the pipelining the SOLINT was set at 2.0 min. Hn was used as the reference station (the only station present in all scans). The target was 'J1243+4043', other calibrators were 'J1242+3751', '4C39.25', '3C345' and '3C286'.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.997 . ERI* = 0.997 . Losses include scan 1 (11.5 min) of Tr, scan 29 (2 min) of Ov (VLBA stations are not included in ERI calculation).

Plots of the autocorrelations
Comments.
Each scan plotted separately, all stations.

plots of the uncalibrated amplitude and phase against time
Comments.
Full-experiment for Hn-* baselines, no calibration applied. A 2-minute plot-averaging was used.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Scalar averaged Hn-* baselines, each scan plotted separately. No calibration applied yet.

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel (not available)
Comments.

TSYS against time
Comments.
TY1 table, each IF/pol on a separate plot.

Telescope sensitivities from the a priori TSYS and Gain curves (the square of this number gives the antenna noise (SEFD) in Jy - the smaller the better).
Comments.
Gain amplitude from CL2 table.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
FRING_PHAS CL3 station phase solutions -- CL3 = CL2+SN2, thus also includes the initial amplitude/parallactic angle calibration from CL2 and the fringe solutions from SN2.

Fringe-fit delay solutions
Comments.
SN2 station delay solutions for the fringed sources, each IF/pol on a separate plot.

Fringe-fit rate solutions
Comments.
SN2 station rate solutions.

Telescope bandpasses
Comments.
Bandpass table 1.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Hn-* baselines, calibrated with CL3. The 2-min plot-averaging still applied.

Calibrated amplitude and phase against frequency channel
Comments.
Hn-* baselines calibrated with CL3 and BP1. The amp and phase plots self-scale, not necessarily going down to 0 in the case of the amps.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
3C345: pdf (not available) , or FITS (not available) .
4C39.25: pdf (not available) , or FITS (not available) .
J1243+4043: pdf (not available) , or FITS (not available) .
J1242+3751: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
3C345: pdf (not available) , or FITS (not available) .
4C39.25: pdf (not available) , or FITS (not available) .
J1243+4043: pdf (not available) , or FITS (not available) .
J1242+3751: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345 .
4C39.25 .
J1243+4043 .
J1242+3751 .
Comments.
Plots of post-SPLIT tables SN1 for the sources.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345: pdf , or text file , or statistical summary (not available) .
4C39.25: pdf , or text file , or statistical summary (not available) .
J1243+4043: pdf , or text file , or statistical summary (not available) .
J1242+3751: pdf , or text file , or statistical summary (not available) .
Comments.
As above, but for the post-SPLIT table SN2.

Telescope sensitivities (the total AMP gain applied during both a priori and self calibration; the square of this number gives the antenna noise (SEFD) in Jy).
Comments.
CL4 gain-amp.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
3C345 .
4C39.25 .
J1243+4043 .
J1242+3751 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Hn-*-*). Only stokes=I shown.

Calibrated visibilities and the source model of:
3C345 .
4C39.25 .
J1243+4043 .
J1242+3751 .
Comments.
For each (fringed) source, plots of amp/phase on Hn-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.

Calibrated visibilities against u,v distance for:
3C345: pdf , or png .
4C39.25: pdf , or png .
J1243+4043: pdf , or png .
J1242+3751: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
3C345: pdf , or png .
4C39.25: pdf , or png .
J1243+4043: pdf , or png .
J1242+3751: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
3C345: pdf , or FITS .
4C39.25: pdf , or FITS .
J1243+4043: pdf , or FITS .
J1242+3751: pdf , or FITS .
Comments.
For each source, a CLEAN map resulting from the automated fringing and self-cal iterations (or phase-referencing) in the pipeline script.